Door-operating mechanism



Nov. 27, 1928. I 4 1,692,821

P.- R. DOBSQN noon OPERATING MECHANISM i Filed July 21, 1937 aSheets-Sheet 1 Nov. 27, 1928. 1,69Z;82l

P. R. DOBSON DOOR OPERATING MECHANISM Filed July 21, 1927 sSheets-Sheer, 2

6 as: 2510 E Patented Nov. 27, 1928.

UNITED STATESPATET caries.

PERCY ROBERT DOBSON, F CALGARY, ALBERTA, CANADA, ASSIGNOR TO BELL EQUIP-MENT COMPANY LIMITED, 0F GAIiGARY CANADA.

DOOR-OPERATING MECHANISM.

Application filedJuly 21 1927, Serial No. 20?,525, and in (lanada June30, 192% My invention is an improvement on door operating mechanisms inwhich pedal. members actuated by a vehicle, open and closethc doorsthrough a system of gears and lever arms, and particularly applies toUnited States application No. 135,209, tiled the 13th of September, 1926and allowed the 3rd or May, 1927, to Percy Robert- Dobson.

The objects of my invention .u to interpose a yieldable resistancebetwcen the pedal members and the clos arms. Sec- 0nd to introduce amechanisin which will allow the actuating pedal members to be quicklydepressed during certain operations and to store the energy sotransmitted so that the doors may close quietly atter the pedal. hasresumed its vertical position, and third, to introduce a selectingdevice between the outside pedal and the doorclosing arms so that thefirst contact of the leading wheels of an automobile while depressingthe exterior pedal will not actuatethe apparatus to close the doors butwhich will actuate the apparatus when depressed a second time by thefollowing wheels of the automobile.

I attain these and other objects by the mechanism illustrated in'theaccompanying drawings, in which- Fig. 1 shows a general perspective ofthe complete apparatus;

Fig. 2 is averticallongitudinal section through the selecting device A.

Fig. 3 is a plan looking down on the selecting device A.

Fig. 4 is an elevationof the shock absorbing device B.

Fig. 5 is a plan of the quadrant to whicl the closing arms are attached.

Fig. 6 is a perspective view of an alternative'door connection.

Fig. 7 is a longitudinal section through the building showing a lockingdevice.

Fig. 8 is a transverse section showing; the locking device.

Similar numerals and letters refer to similur parts throughout theseveral views:

Referring-to the drawings:

1 represents the walls of a building having therein the doors 2 and 3. 4is the exterior pedal member which normally retains an up-- rightposition, the means used for influencing same not being apart of thisapplication. 5 is the interior pedal member which is similar in natu eto the enterior pedal l. (3 and 5 comprises a divided rod connecting theex;-

terior pedal 4 to the gear 8. 7 is a connecting rod intermediate theinterior pedal 5 and.

the gear 8 already referred to.

The gear 8 in mesh with-the gear 8 and is carried by on vertical member9. In line with the member 9 is the member 10 supported in a bracket 13from the wall 1 of the building. Intermediate the members 9 and 10 isthe mechanism B which is hereinafter described in detail. Secured to themember 10 is the quadrant 14-. to which is pivotally attached theoperating. arms 15 and 1.6 which are suitablyconnected to the doors ofthe building. It will be evident that rotation of the quadrant 14 by themember 10 will operate the door to a closed or open position.

Mounted upon the connecting rods 6 and 6 at their junction is theselecting device shown at A and described hereinafter in detail.

The selecting device comprises rod 6 which is'tubular in form and withinwhich the connecting rod 6 engages in slidable rel-a tion. Theconnecting rod 6 is slotted at 17 for the purpose hereinafter mentionedand also at 18. Carried by the rod 6 is the projecting pin 19 whichslides freelyin the slot 18 mentioned. Mounted on the rod b is'thethrust collar 20 and the thrust collar 21 which carries thereon thebracket 22. are retained by the set screws 23 and 24k or other suitable.means. Intermediate the thrust collarsQO and 21.21nd surrounding the rod6* is the tubular sleeve 25 whichis partly cut away at 26 as shown ondrawing. On the sleeve 25 is formed the arm 27 with which is engaged theplunger 28 which passes through the object of holding the sleeve 25 leftor right of its dead centre when-it is so turned. A thrust collar 31 ismounted upon the rod 6, and retained by the set screw 32. Intermediatethe collar 31and the endof the rod 6 is the compressionspring: An anchorbolt 34. is engaged in the slot 17 and intermediate same and theconnecting eye 35 formedyon the end of rod 6 is the tension spring; 36.The springs and 36 are'inserted to lessen the shocks due to abruptoperation andoth erwise to make the device 0perate smoothly. v i

Formed on the underside of sleeve-25 is a proj ccting catch 37 and inrelation thereto is the spring influenced pli-inger 38. The plunger 38is mounted in'a socket 39111161 is These collars influenced by thecompression spring 40. The plunger 38 engages the catch 37 during theoperation of closing the doors when leaving the building after wheeldepresses pedal 4.

The shock absorbing device hitherto mentioned as B comprises the hollowshaft members 9 and already mentioned. Passing into same and holdingthem in alignment is the shaft 41 upon which is rigidly fixed the collar42. l/Vound around the shaft 41 is the double coil spring 43 whichreverses its direction where engaged with the collar 42. The upper andlower endsof the spring 43 are fastened to the tubularmembers 10 and 9respectively. The wall of member 9 is partly cut away at 44and therepasses through the opening the pin 45 which is fastened to the innershaft 41. The wall of member 10 similarly cut away at 46 and allows thepin 47 which is mounted on the shaft 41 to pro trude. These pins 45 and47 allow the upper or lower portion of the spring 43 to be woundupwithout simultaneous motion of the members 9 and 10.

In the quadrant 14 already mentioned are formed the hole 48 to which oneof the door operating arms is pivotally engaged. A slotted hole 49 inthe quadrant g ves an adjustable point of su port for the second dooropcrating arm. t is thus possible to have one door leaf close slightlyin advance of the other and some such provision is necessary where thedoors are rebated on their meeting edges. 1

In operation commencing with the car outside the building, the doorsbeing closed, and the sleeve in the position shown in Fig. 3. The carapproaching depresses the pedal 4 towards the building and through thethrust of connecting rods 6 and 6 actuates the gear 8 and thereby thegear 8 and the vertical shaft 9. The spring 43 acting as a flexibleconnection between the shafts 9 and 10 the quadrant 14 is rotatedwithout shock and the doors are opened. In the thrust of the connectingrod 6 the pin 19 is driven towards the larger end of the opening 26 anddue to the curvature of'same the sleeve is partly rotated in acounterclockwise direction beyond its vertical dead centre where it isretained by the influence of spring 30. When the car proceeds into thebuilding the rear wheels again depress pedal 4, butas 6 is at the limitof its travel there is no further effect on the gear 8. The front wheelsof the car then depress pedal 5 which throu h rod 7 reverses the motionof gear 8 there y closing the door. In use the front Wheel of the caroverruns pedal 5. p

In withdrawing from the buildin the front wheel depresses pedal 5 towars the doorway opening the doors and proceeding through same the rearwheels of the car first encounter the exterior pedal 4. As the pin 19 isnow clear of the small notch in the sleeve 25 the pull on acting rod 6is ineffective to op erate gear 8, the pin travelling along the nar rowportion of the opening 26. This motion rotates the sleeve 25 in aclockwise direction so that when the rear wheel has passed over pedal 4and same returns to its vertical position, the pin 19 travels forward bymeans of spring 36 and engages in the notch in opening 26 alreadyreferred to. When the front wheels depress pedal 4 the rods 6 and 6 actas a solid unit and the whole selecting device A is pulled forwardtowards the door. The catch 37 is now in a position to engage the springplunger 38 thereby holding the spring 43 of the device B in a conditionto close the doors 2 and 3. That is a car leaving the building need nothold the pedal'4 depressed until the doors are actually closed since theengagement of catch 37 with plunger38 is effective towards the same end.

What I claim is:

l. The combination with door operatingmechanisms employing exterior andinterlor pivotal pedal members actuated by vehicle wheels, a dividedshaft intermediate the exterior pedal member and the remainingmechanism, a rotatable sleeve engaging the divided shaft at the junctionthereof, means of rotating the sleeve through the intersection of theportions of the divided shaft, the whole being so adapted that theposition of the sleeve will unite the divided shaft, c0- ordinating themotion of the exterior pedal with the door operating mechanism oralternately disunite the divided shaft making the motion of the exteriorpedal ineffective.

2. The combination with door operating mechanism employing exterior andinterior pivotal pedal members actuated by vehicle wheels, two shaftswith telescopic engagement intermediate the exterior pedal and theremaining mechanism, a pin mounted on the interior shaft and passingthrough a slot in the wall of the exterior shaft, a rotatable sleevesurrounding the shafts at their junction the said sleeve being cut awayto engage the said pin on the interior shaft, the rotatable sleeve beingso adapted that its engage ment with the said pin will unite the shaftsto co-ordinate the motion of theexterior pedal and the remainingmechanism, or alternately in another position make the coordinationineffective.

3. The combination with door operating mechanism employing exterior andinterior engage the said pin on the interior shaft, the

rotatable sleeve being so adapted that its enpivotal pedal membersactuated by vehicle co-ordination ineffective; spring means in relationto the/junction of the shafts to reduce the shock of engagement, andspring means to hold the rotatable sleeve in its al-.

ternate positions.

4. The combination with door operating mechanism employing exterior andinterior pivotal pedal members actuated'by vehicle wheels, two shaftswith telescopic engagement intermediate the exterior pedal and theremaining mechanism, a pin mounted on the interior shaft and passingthrough a slot in the wall of the exterior shaft, a rotatable sleevesurounding the shafts at'their junction the said sleeve being cut awayto engage the said pin on the interior shaft, the rotatable sleeve beingso adapted that its engagement with the said pin will unite the shaftsto co-ordinate the motion of the exterior pedal and the remainingmechanism, or alternately in another position make the co ordinationineffective; a lug on the aforesaid rotatable sleeve, a springinfluenced'plunger in relation to the said lug and adapted to engagesame for the purpose specified.

5-. The combination with door operating mechanism employing exterior andinterior pivotal pedal members actuated by vehicle wheels, a tubularvertical shaft in relation to the pedal members, means intermediate thepedals and the vertical shaft actuating the shaft when either pedal isdepressed, an upper tubular shaft carrying door operating" arms, a rodintermediate the tWo shafts and engaged in the bores thereof and havmglimited rotational motion relative to the shafts,

a spring secured to the rod about its centre and at its free ends to theshafts respectively forming a yieldable connection between the twoshafts, means of holding the first named shaft after actuation,comprising a lug on a I rotatable sleeve engaging a spring influencedplunger in relatlon thereto.

PERCY ROBERT DOBSON.

